Java Programming

Hi,

I am trying to draw a stop light using Ellipse2D.Double but I'm running into a problem. Everytime I draw a new circle of a different color, it makes all of the circles the same color. Any help is appreciated!

Here's my code:

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.geom.Ellipse2D;

import javax.swing.JFrame;
import javax.swing.JPanel;


/**
 * This class (StopLightView.java) displays the stop light's GUI
 * @author Steve 
 *
 */
public class StopLightView 
{
	/** The JFrame representing a stop light */
	private JFrame theStopLight_;
	
	/** The JPanel representing the red light */
	private JPanel theRedLight_;
	
	/** The JPanel representing the yellow light */
	private JPanel theYellowLight_;
	
	/** The JPanel representing the green light */
	private JPanel theGreenLight_;
	
	/**
	 * Instantiates all of the necessary components of the stop light.
	 * @return StopLightView an instance of this class.
	 */
	public StopLightView createStopLight()
	{
		StopLightFactory myFactory = new StopLightFactory();
		theRedLight_ = myFactory.createLight(Color.RED);
		theYellowLight_ = myFactory.createLight(Color.YELLOW);
		theGreenLight_ = myFactory.createLight(Color.GREEN);
		theStopLight_ = myFactory.makeStopLight();
		
		return (this);
	}
	
	/**
	 * Makes the instance of this class visible
	 */
	public void show()
	{
		theStopLight_.setVisible(true);
	}
	
	/**
	 * This class creates StopLights
	 */
	private final class StopLightFactory
	{
		/** The current color of the light to be produced. */
		private Color theColor_;
		
		/** The shape of the light */
		private Ellipse2D.Double theLightShape_;
		
		/**
		 * This method is used to make a stop light with one red light, one green light, and one yellow light.
		 * @return JFrame that represents a stop light
		 */
		private JFrame makeStopLight()
		{
			// Create our lights
			theRedLight_ = createLight(Color.RED);
			theYellowLight_ = createLight(Color.YELLOW);
			theGreenLight_ = createLight(Color.GREEN);
			
			// Setup the constraints for our layout
			GridBagConstraints gbc = new GridBagConstraints();
			gbc.fill = GridBagConstraints.NONE;
			gbc.gridx = 0;
			gbc.gridy = 0;
			gbc.gridheight = 1;
			gbc.gridwidth = 1;
			gbc.anchor = GridBagConstraints.CENTER;
			
			// Create the panel and set its attributes
			JPanel stopLightPanel = new JPanel(new GridBagLayout());
			stopLightPanel.setSize(new Dimension(300, 500));
			
			// Add our lights
			stopLightPanel.add(theRedLight_, gbc);
			
			gbc.gridy = 1;
			stopLightPanel.add(theYellowLight_, gbc);

			gbc.gridy = 2;
			stopLightPanel.add(theGreenLight_, gbc);
			
			// Create the frame that holds everything and add the components
			JFrame stopLightFrame = new JFrame("Stop Light v1.0");
			stopLightFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
			stopLightFrame.setPreferredSize(new Dimension(450, 650));
			stopLightFrame.getContentPane().add(stopLightPanel);
			stopLightFrame.pack();
			
			return stopLightFrame;
		}
		
		/**
		 * Creates a light with a specified color
		 * @param color the color the light should be
		 * @return JPanel a panel with a light drawn on it
		 */
		private JPanel createLight(Color color)
		{
			theColor_ = color;
			theLightShape_ = new Ellipse2D.Double(25, 0, 150, 150);
			 
			JPanel lightPanel = new JPanel()
			{
				public void paintComponent(Graphics graphics)
				{
					Graphics2D graphics2D = (Graphics2D)graphics;
					graphics2D.setColor(theColor_);
					graphics2D.fill(theLightShape_);
					paintComponents(graphics);
				}
			};
			
			lightPanel.setPreferredSize(new Dimension(200, 200));
			
			return lightPanel;
		}
	}
}


/**
 * Test driver
 * @author (StopLight.java)
 *
 */
public class StopLight 
{
	public static void main(String[] args)
	{
		System.out.println("Creating an instance of the view");
		StopLightView view = new StopLightView();
		view.createStopLight().show();
	}
}